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Siemens LOGO Soft Comfort Online Help Manual

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Reference material
5.3 Special functions
LOGO!Soft Comfort Online Help
260 Operating Instructions, 11/2017
5.3.1.10
Stairway lighting switch
Short description
The edge of an input pulse triggers a configurable time. The output is reset when this time
has expired. An off warning can be output prior to the expiration of this time.
Connection
Description
Input
Trg
You trigger the time (off-delay) for the stairway switch with a signal at input
Trg
(Trigger).
Parameter
T
: The output is reset (1 to 0 transition) when the off-delay time
T
has expired.
T
!
: determines the triggering time for the prewarning.
T
!L
: determines the length of the prewarning time.
Retentivity on = the status is retentive in memory.
Output
Q
Q
is reset after the time
T
has expired. A warning signal can be output before
this time has expired.
Parameters T, T
!
and T
!L
The off-delay time T, the prewarning time T
!
and the prewarning period T
!L
can be provided
by the actual value of another already-programmed function:
● Analog comparator: Ax - Ay
● Analog threshold trigger: Ax
● Analog amplifier: Ax
● Analog multiplexer: AQ
● Analog ramp: AQ
● Mathematic instruction: AQ
● PI controller: AQ
● Up/Down counter: Cnt
For the
0BA7
and
0BA8
devices, you can additionally use the actual values of the following
already-programmed functions:
● On-delay: Ta
● Off-delay: Ta
● On-/off-delay: Ta
● Retentive on-delay: Ta
● Wiping relay(pulse output): Ta
● Edge triggered wiping relay: Ta
● Asynchronous pulse generator: Ta
● Stairway light switch: Ta
… 260 …


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